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Low-energy calibration of SuperCDMS HVeV cryogenic silicon calorimeters using Compton steps

Albakry, M. F. [University of British Columbia; TRIUMF] (ORCID:0009000696784090)·Alkhatib, I. [University of Toronto] (ORCID:0009000622625839)·Alonso-González, D. [Universidad Autónoma de Madrid; Instituto de Física Teórica UAM-CSIC] (ORCID:0000000275729184)·Amaral, D. W. P. [Durham University]·Anczarski, J. [SLAC National Accelerator Laboratory] (ORCID:0000000343173385)·Aralis, T. [SLAC National Accelerator Laboratory] (ORCID:0000000235016948)·Aramaki, T. [Northeastern University] (ORCID:0000000251044682)·Ataee Langroudy, I. [Texas A&M University] (ORCID:0000000312436664)·Bathurst, C. [University of Florida]·Bhattacharyya, R. [Texas A&M University] (ORCID:0000000298977607)·Biffl, A. J. [Texas A&M University] (ORCID:0000000224885531)·Brink, P. L. [SLAC National Accelerator Laboratory] (ORCID:0000000218793155)·Buchanan, M. [University of Toronto] (ORCID:0009000714235985)·Bunker, R. [Pacific Northwest National Laboratory] (ORCID:0000000321747632)·Cabrera, B. [Stanford University] (ORCID:0000000293866676)·Calkins, R. [Southern Methodist University] (ORCID:0000000280795688)·Cameron, R. A. [SLAC National Accelerator Laboratory] (ORCID:0000000309422747)·Cartaro, C. [SLAC National Accelerator Laboratory] (ORCID:0000000313512630)·Cerdeño, D. G. [Universidad Autónoma de Madrid; Instituto de Física Teórica UAM-CSIC] (ORCID:0000000276491956)·Chang, Y.-Y. [University of California] (ORCID:000000026441980X)·Chaudhuri, M. [National Institute of Science Education and Research] (ORCID:0000000165910951)·Chen, J.-H. [Texas A&M University] (ORCID:0009000658654973)·Chen, R. [Northwestern University] (ORCID:000000019669426X)·Chott, N. [South Dakota School of Mines and Technology]·Cooley, J. [SNOLAB; Southern Methodist University] (ORCID:0000000167612042)·Coombes, H. [University of Florida]·Cushman, P. [University of Minnesota] (ORCID:0000000249509807)·Cyna, R. [University of Toronto] (ORCID:0000000266323043)·Das, S. [National Institute of Science Education and Research] (ORCID:0000000301812863)·Dharani, S. [University of British Columbia] (ORCID:0000000271190927)·di Vacri, M. L. [Pacific Northwest National Laboratory] (ORCID:0000000150489762)·Diamond, M. D. [University of Toronto] (ORCID:0009000176141497)·Elwan, M. [University of Florida] (ORCID:0009000200340147)·Fallows, S. [University of Minnesota] (ORCID:0000000272003628)·Fascione, E. [Queen’s University; TRIUMF]·Figueroa-Feliciano, E. [Northwestern University] (ORCID:0000000192855556)·Franzen, S. L. [University of South Dakota]·Gevorgian, A. [University of Colorado Denver]·Ghaith, M. [Zayed University] (ORCID:0000000333044803)·Godden, G. [University of Toronto] (ORCID:0009000471000072)·Golatkar, J. [Universität Heidelberg]·Golwala, S. R. [California Institute of Technology] (ORCID:0000000210987174)·Gualtieri, R. [Northwestern University]·Hall, J. [SNOLAB; Laurentian University] (ORCID:000000024895858X)·Harms, S. A. S. [University of Toronto] (ORCID:0009000115307270)·Hays, C. [Northwestern University]·Hines, B. A. [University of Colorado Denver] (ORCID:0000000329495177)·Hong, Z. [University of Toronto] (ORCID:0000000187624921)·Hsu, L. [Fermi National Accelerator Laboratory] (ORCID:0000000255916433)·Huber, M. E. [University of Colorado Denver; University of Colorado Denver] (ORCID:000000027638902X)·Iyer, V. [University of Toronto] (ORCID:0000000275837329)·Kashyap, V. K. S. [National Institute of Science Education and Research] (ORCID:0000000280017261)·Keller, S. T. D. [University of Toronto]·Kelsey, M. H. [Texas A&M University] (ORCID:0000000158593273)·Kennard, K. T. [Northwestern University] (ORCID:0009000323942666)·Kromer, Z. [University of Colorado Denver]·Kubik, A. [SNOLAB]·Kurinsky, N. A. [SLAC National Accelerator Laboratory] (ORCID:000000025872519X)·Lee, M. [Texas A&M University]·Leyva, J. [Northeastern University]·Lichtenberg, B. [Universität Heidelberg]·Liu, J. [Southern Methodist University]·Liu, Y. [University of Minnesota] (ORCID:0000000264651924)·Lopez Asamar, E. [Universidad Autónoma de Madrid; Instituto de Física Teórica UAM-CSIC]·Lukens, P. [Fermi National Accelerator Laboratory] (ORCID:0000000217506687)·López Noé, R. [Universidad Autónoma de Madrid] (ORCID:0009000260764988)·MacFarlane, D. B. [SLAC National Accelerator Laboratory] (ORCID:0000000301934414)·Mahapatra, R. [Texas A&M University] (ORCID:0000000302861114)·Mammo, J. S. [University of South Dakota] (ORCID:000000023293783X)·Mast, N. [University of Minnesota]·Mayer, A. J. [TRIUMF]·McNamara, P. C. [University of Toronto] (ORCID:000000020676324X)·Meyer zu Theenhausen, H. [Institute for Astroparticle Physics (IAP)]·Michaud, É. [Université de Montréal]·Michielin, E. [Institute for Astroparticle Physics (IAP)] (ORCID:0000000157518116)·Mickelson, K. [University of Colorado Denver] (ORCID:0000000154068367)·Mirabolfathi, N. [Texas A&M University] (ORCID:0000000272318910)·Mirzakhani, M. [Texas A&M University] (ORCID:0009000114076247)·Mohanty, B. [National Institute of Science Education and Research] (ORCID:0000000196102914)·Mondal, D. [National Institute of Science Education and Research] (ORCID:0009000715831885)·Monteiro, D. [Texas A&M University] (ORCID:000900048643851X)·Nelson, J. [University of Minnesota]·Neog, H. [University of Minnesota] (ORCID:0000000316580022)·Novati, V. [Northwestern University] (ORCID:0000000309220475)·Orrell, J. L. [Pacific Northwest National Laboratory] (ORCID:0000000179684051)·Osborne, M. D. [Texas A&M University] (ORCID:0000000211640631)·Oser, S. M. [University of British Columbia; TRIUMF] (ORCID:0000000294311859)·Pandey, L. [University of South Dakota] (ORCID:0000000321994289)·Pandey, S. [University of Minnesota] (ORCID:0000000304406019)·Partridge, R. [SLAC National Accelerator Laboratory] (ORCID:0000000208062308)·Patel, P. K. [Northwestern University] (ORCID:0000000223302242)·Pedreros, D. S. [Université de Montréal] (ORCID:0009000186071226)·Peng, W. [University of Toronto] (ORCID:0009000240624347)·Perry, W. L. [University of Toronto] (ORCID:0009000345872048)·Podviianiuk, R. [University of South Dakota] (ORCID:0000000197537952)·Potts, M. [Pacific Northwest National Laboratory] (ORCID:0000000212554735)·Poudel, S. S. [South Dakota School of Mines and Technology] (ORCID:0000000334424883)·Pradeep, A. [SLAC National Accelerator Laboratory] (ORCID:0000000180149953)·Pyle, M. [University of California; Lawrence Berkeley National Laboratory] (ORCID:0000000234906754)·Rau, W. [TRIUMF] (ORCID:0000000199685190)
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Abstract

Cryogenic calorimeters for low-mass dark matter searches have achieved sub-eV energy resolutions, driving advances in both low-energy calibration techniques and our understanding of detector physics. The energy deposition spectrum of gamma rays scattering off target materials exhibits step-like features, known as Compton steps, near the binding energies of atomic electrons. Here, we demonstrate a successful use of Compton steps for sub-keV calibration of cryogenic silicon calorimeters, utilizing four SuperCDMS High-Voltage eV-resolution detectors operated with 0 V bias across the crystal. This new calibration at 0 V is compared with the established high-voltage calibration using optical photons. The comparison indicates that the detector response at 0 V is about 30% weaker than expected, highlighting challenges in detector response modeling for low-mass dark matter searches.

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS79 ASTRONOMY AND ASTROPHYSICSHVeVSuperCDMSdark matterdark matter detectorsparticle dark matterparticle detectors

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BibTeXRIS

Albakry, M. F. [University of British Columbia; TRIUMF] (ORCID:0009000696784090), Alkhatib, I. [University of Toronto] (ORCID:0009000622625839), Alonso-González, D. [Universidad Autónoma de Madrid; Instituto de Física Teórica UAM-CSIC] (ORCID:0000000275729184), Amaral, D. W. P. [Durham University], Anczarski, J. [SLAC National Accelerator Laboratory] (ORCID:0000000343173385), Aralis, T. [SLAC National Accelerator Laboratory] (ORCID:0000000235016948), Aramaki, T. [Northeastern University] (ORCID:0000000251044682), Ataee Langroudy, I. [Texas A&M University] (ORCID:0000000312436664), Bathurst, C. [University of Florida], Bhattacharyya, R. [Texas A&M University] (ORCID:0000000298977607), Biffl, A. J. [Texas A&M University] (ORCID:0000000224885531), Brink, P. L. [SLAC National Accelerator Laboratory] (ORCID:0000000218793155), Buchanan, M. [University of Toronto] (ORCID:0009000714235985), Bunker, R. [Pacific Northwest National Laboratory] (ORCID:0000000321747632), Cabrera, B. [Stanford University] (ORCID:0000000293866676), Calkins, R. [Southern Methodist University] (ORCID:0000000280795688), Cameron, R. A. [SLAC National Accelerator Laboratory] (ORCID:0000000309422747), Cartaro, C. [SLAC National Accelerator Laboratory] (ORCID:0000000313512630), Cerdeño, D. G. [Universidad Autónoma de Madrid; Instituto de Física Teórica UAM-CSIC] (ORCID:0000000276491956), Chang, Y.-Y. [University of California] (ORCID:000000026441980X), Chaudhuri, M. [National Institute of Science Education and Research] (ORCID:0000000165910951), Chen, J.-H. [Texas A&M University] (ORCID:0009000658654973), Chen, R. [Northwestern University] (ORCID:000000019669426X), Chott, N. [South Dakota School of Mines and Technology], Cooley, J. [SNOLAB; Southern Methodist University] (ORCID:0000000167612042), Coombes, H. [University of Florida], Cushman, P. [University of Minnesota] (ORCID:0000000249509807), Cyna, R. [University of Toronto] (ORCID:0000000266323043), Das, S. [National Institute of Science Education and Research] (ORCID:0000000301812863), Dharani, S. [University of British Columbia] (ORCID:0000000271190927), di Vacri, M. L. [Pacific Northwest National Laboratory] (ORCID:0000000150489762), Diamond, M. D. [University of Toronto] (ORCID:0009000176141497), Elwan, M. [University of Florida] (ORCID:0009000200340147), Fallows, S. [University of Minnesota] (ORCID:0000000272003628), Fascione, E. [Queen’s University; TRIUMF], Figueroa-Feliciano, E. [Northwestern University] (ORCID:0000000192855556), Franzen, S. L. [University of South Dakota], Gevorgian, A. [University of Colorado Denver], Ghaith, M. [Zayed University] (ORCID:0000000333044803), Godden, G. [University of Toronto] (ORCID:0009000471000072), Golatkar, J. [Universität Heidelberg], Golwala, S. R. [California Institute of Technology] (ORCID:0000000210987174), Gualtieri, R. [Northwestern University], Hall, J. [SNOLAB; Laurentian University] (ORCID:000000024895858X), Harms, S. A. S. [University of Toronto] (ORCID:0009000115307270), Hays, C. [Northwestern University], Hines, B. A. [University of Colorado Denver] (ORCID:0000000329495177), Hong, Z. [University of Toronto] (ORCID:0000000187624921), Hsu, L. [Fermi National Accelerator Laboratory] (ORCID:0000000255916433), Huber, M. E. [University of Colorado Denver; University of Colorado Denver] (ORCID:000000027638902X), Iyer, V. [University of Toronto] (ORCID:0000000275837329), Kashyap, V. K. S. [National Institute of Science Education and Research] (ORCID:0000000280017261), Keller, S. T. D. [University of Toronto], Kelsey, M. H. [Texas A&M University] (ORCID:0000000158593273), Kennard, K. T. [Northwestern University] (ORCID:0009000323942666), Kromer, Z. [University of Colorado Denver], Kubik, A. [SNOLAB], Kurinsky, N. A. [SLAC National Accelerator Laboratory] (ORCID:000000025872519X), Lee, M. [Texas A&M University], Leyva, J. [Northeastern University], Lichtenberg, B. [Universität Heidelberg], Liu, J. [Southern Methodist University], Liu, Y. [University of Minnesota] (ORCID:0000000264651924), Lopez Asamar, E. [Universidad Autónoma de Madrid; Instituto de Física Teórica UAM-CSIC], Lukens, P. [Fermi National Accelerator Laboratory] (ORCID:0000000217506687), López Noé, R. [Universidad Autónoma de Madrid] (ORCID:0009000260764988), MacFarlane, D. B. [SLAC National Accelerator Laboratory] (ORCID:0000000301934414), Mahapatra, R. [Texas A&M University] (ORCID:0000000302861114), Mammo, J. S. [University of South Dakota] (ORCID:000000023293783X), Mast, N. [University of Minnesota], Mayer, A. J. [TRIUMF], McNamara, P. C. [University of Toronto] (ORCID:000000020676324X), Meyer zu Theenhausen, H. [Institute for Astroparticle Physics (IAP)], Michaud, É. [Université de Montréal], Michielin, E. [Institute for Astroparticle Physics (IAP)] (ORCID:0000000157518116), Mickelson, K. [University of Colorado Denver] (ORCID:0000000154068367), Mirabolfathi, N. [Texas A&M University] (ORCID:0000000272318910), Mirzakhani, M. [Texas A&M University] (ORCID:0009000114076247), Mohanty, B. [National Institute of Science Education and Research] (ORCID:0000000196102914), Mondal, D. [National Institute of Science Education and Research] (ORCID:0009000715831885), Monteiro, D. [Texas A&M University] (ORCID:000900048643851X), Nelson, J. [University of Minnesota], Neog, H. [University of Minnesota] (ORCID:0000000316580022), Novati, V. [Northwestern University] (ORCID:0000000309220475), Orrell, J. L. [Pacific Northwest National Laboratory] (ORCID:0000000179684051), Osborne, M. D. [Texas A&M University] (ORCID:0000000211640631), Oser, S. M. [University of British Columbia; TRIUMF] (ORCID:0000000294311859), Pandey, L. [University of South Dakota] (ORCID:0000000321994289), Pandey, S. [University of Minnesota] (ORCID:0000000304406019), Partridge, R. [SLAC National Accelerator Laboratory] (ORCID:0000000208062308), Patel, P. K. [Northwestern University] (ORCID:0000000223302242), Pedreros, D. S. [Université de Montréal] (ORCID:0009000186071226), Peng, W. [University of Toronto] (ORCID:0009000240624347), Perry, W. L. [University of Toronto] (ORCID:0009000345872048), Podviianiuk, R. [University of South Dakota] (ORCID:0000000197537952), Potts, M. [Pacific Northwest National Laboratory] (ORCID:0000000212554735), Poudel, S. S. [South Dakota School of Mines and Technology] (ORCID:0000000334424883), Pradeep, A. [SLAC National Accelerator Laboratory] (ORCID:0000000180149953), Pyle, M. [University of California; Lawrence Berkeley National Laboratory] (ORCID:0000000234906754), Rau, W. [TRIUMF] (ORCID:0000000199685190). 2025-11-21. Low-energy calibration of SuperCDMS HVeV cryogenic silicon calorimeters using Compton steps. https://doi.org/10.1103/jj7w-gkgg

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